These are lines from UT3’s UTEngine.ini file. Arkham Asylum should have something similar.

Bulletstorm

Recent Unreal Engine games have a 60 FPS limiter, and the trick is to find the UEngine.ini file and set alll instances to bSmoothFrameRate=False. In Bulletstorm the ini file is encrypted so you need this first, then edit StormEngine.ini in C:\Users\username\Documents\My Games\BulletStorm\StormGame\Config

Crysis 2

Does not support higher than 60Hz refresh rate due to DirectX 10. I use nVidia Control Panel to force the refresh rate to max, which ends up as 120Hz.

Alien vs Predator 3

Does not support higher than 60Hz refresh rate due to DirectX 10. nVidia Control Panel does not provide a refresh rate override.

Red Faction: Guerilla

This games engine is tied to the FPS, so the faster FPS you have the faster the game runs. It makes you run faster, and drive faster and that makes it harder to drive well and attain achievements.

Update! This has been fixed in a patch.

DirectX 10 games

Seems to generally have problems with the 60Hz limit. Doesn’t anyone at Microsoft that develops or tests DirectX have a monitor that can run at 120Hz? That’s no good!